All credit goes to forum user Super David.
I found this cheat to force MKWii to run at 30FPS and it had no discussion surrounding it, but the effect it has on lower-end hardware is incredible. On my Latitude E6400 - a non-gaming laptop from 2007 - the cheat brings the game from a constant half-speed to running at 100% on all maps and menus. Everything still works perfectly despite the framerate difference, and I've had no problems playing online.
$Always 30FPS [Nick Reynolds]
004250D4 00000002
0029FD69 00000002
I found this cheat to force MKWii to run at 30FPS and it had no discussion surrounding it, but the effect it has on lower-end hardware is incredible. On my Latitude E6400 - a non-gaming laptop from 2007 - the cheat brings the game from a constant half-speed to running at 100% on all maps and menus. Everything still works perfectly despite the framerate difference, and I've had no problems playing online.
$Always 30FPS [Nick Reynolds]
004250D4 00000002
0029FD69 00000002